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The Boeing X-32 is a concept demonstrator aircraft that was designed for the Joint Strike Fighter competition. It lost to the Lockheed Martin X-35 demonstrator, which was further developed into the Lockheed Martin F-35 Lightning II .
The X-36 was unstable in both pitch and yaw axes, so an advanced digital fly-by-wire control system was used to provide stability. First flown on 17 May 1997, it made 31 successful research flights. It handled very well, and the program is reported to have met or exceeded all project goals.
The X-37 Orbital Test Vehicle is a reusable robotic spaceplane. It is an approximately 120-percent-scale derivative of the Boeing X-40, [6] [22] measuring over 29 feet (8.8 m) in length, and features two angled tail fins. [26] [41] The X-37 launches atop an Atlas V 501 [26] [19] or a SpaceX Falcon 9 [42] or Falcon Heavy [43] rocket.
30 Zn 312 Cu 23571.391336 31 Ga 13221133122211332 Eu.Ca.Ac.H.Ca.Zn 1447.8905642 32 Ge 31131122211311122113222 Ho.Ga 1887.4372276 33 As 11131221131211322113322112 Ge.Na 27.246216076 34 Se 13211321222113222112 As 35.517547944 35 Br 3113112211322112 Se 46.299868152 36 Kr 11131221222112 Br 60.355455682 37 Rb 1321122112 Kr 78.678000089 38 Sr 3112112 Rb
On 20 July 2001, to demonstrate the X-35's STOVL capability, the X-35B took off in less than 500 feet (150 m), went supersonic, and landed vertically. [23] [24] [25] The X-35C first flew on 16 December 2000 and tested simulated carrier recovery and power approach. [26] In the fly-off between the X-32 and the X-35, the latter was judged to be ...
The Lockheed Martin X-33 was a proposed uncrewed, sub-scale technology demonstrator suborbital spaceplane that was developed for a period in the 1990s. The X-33 was a technology demonstrator for the VentureStar orbital spaceplane, which was planned to be a next-generation, commercially operated reusable launch vehicle .
The Rockwell X-30 was an advanced technology demonstrator project for the National Aero-Space Plane (NASP), part of a United States project to create a single-stage-to-orbit (SSTO) spacecraft and passenger spaceliner. [1]
A formula for computing the trigonometric identities for the one-third angle exists, but it requires finding the zeroes of the cubic equation 4x 3 − 3x + d = 0, where is the value of the cosine function at the one-third angle and d is the known value of the cosine function at the full angle.